In addition to the DOOM game screenshot from the German print magazine GameStar
(story), the DOOM Center
Downloads section also now has the DOOM QuakeCon 2001 video presentation,
compressed down to a 4 MB download after discovering a less compressed 200 MB
version on the GameStar cover mount CD. Update: Concerned about the wrath of the powers-that-be over permissions and copyrights and stuff, they have decided to pull the downloads of this movie until they can be sure it's kosher.

The quality looks ok though doesnt look like a shaky cam footage so its probably id approved but thats just me guessing of course

I finally got to have a look at the footage tonight (thanks Phalex), and it's most definitely ShakyCam footage - you can see the edge of the footage moving within the movie frame - and id Software requested no cameras to be used during the presentation. So this snippet was smuggled out, and it's not likely more will show up elsewhere.